If not for his ability to take over people's mind and body, Yuu Otosaka would be an ordinary high school student. Though it only lasts for five seconds at a time, Yuu's mysterious power allowed him to cheat his way to the top of his class and enter a prestigious high school, where he continues his dishonest acts. His shenanigans are eventually stopped by Nao Tomori—the headstrong student council president from Hoshinoumi Academy—who sees through his deceit. Through coercion, Nao convinces Yuu to transfer to Hoshinoumi and join the student council. Hoshinoumi Academy is secretly an institution created for adolescents who possess supernatural abilities—with the student council serving as a means of locating those who abuse their powers. With Yuu begrudgingly assisting in council affairs, the group sets out to find and protect new ability users from harm. However, as they further investigate the abilities, their findings entangle them in far more complicated matters than they could ever imagine.

When Hideki Motosuwa leaves his apartment and accidentally forgets his wallet, Chii takes the wallet and follows him, leaving Sumomo and Kotoko alone in the apartment. It doesn’t take long time until Sumomo discovers that Chii forgot her panties, so Sumomo and Kotoko sets out on an adventurous trip to return the panties to Chii. (Source: ANN)

In Martian colony Fourth Tokyo lies a classroom of Kirishina Corporation's brightest minds spearheading aerospace development: A-TEC, led by genius engineer Kaito Sera, eagerly anticipating the arrival of their newest member. It soon becomes clear, however, that the transfer student is hardly ordinary—Nagisa Kiryuu, newly appointed chief of A-TEC and the younger brother of the corporation's CEO, is sent to shut the program down. To keep the classroom alive, Kaito and his students desperately work to develop a successor to their most powerful rocket, the X-2; meanwhile, Nagisa climbs the corporate ladder in pursuit of his own mission. In spite of this, their separate battles soon reveal that much more is going on in Kirishina Corporation than meets the eye. Classroom☆Crisis follows Kaito and Nagisa, as well as Kaito's younger sister Mizuki and A-TEC's test pilot Iris Shirasaki, in a story of intrigue, political warfare, and, against all odds, romance. As Nagisa and A-TEC are dragged further and further into Kirishina Corporation's conspiracies, friendships grow and pasts are unveiled as they fight to avert their classroom crisis.

Tomoya Okazaki is a delinquent who finds life dull and believes he'll never amount to anything. Along with his friend Youhei Sunohara, he skips school and plans to waste his high school days away. One day while walking to school, Tomoya passes a young girl muttering quietly to herself. Without warning she exclaims Anpan! (a popular Japanese food) which catches Tomoya's attention. He soon discovers the girl's name is Nagisa Furukawa and that she exclaims things she likes in order to motivate herself. Nagisa claims they are now friends, but Tomoya walks away passing the encounter off as nothing. However, Tomoya finds he is noticing Nagisa more and more around school. Eventually he concedes and befriends her. Tomoya learns Nagisa has been held back a year due to a severe illness and that her dream is to revive the school's drama club. Claiming he has nothing better to do, he decides to help her achieve this goal along with the help of four other girls. As Tomoya spends more time with the girls, he learns more about them and their problems. As he attempts to help each girl overcome her respective obstacle, he begins to realize life isn't as dull as he once thought.